In the use
particle system how to avoid two
particles intersect each other as in the following figure:
Our settings for particles:
Physics = Newtonian, [checked] Size deflect,
Render: Object: dupli object : icosphere
The original aim was to simulate separation of sands by some structures (combinations of tubes) due to their weights and the system configuration. So in our model, we used particle system to generate a continuous feed of sands into the system. Finally some sands are collected in some containers somewhere in the system.
The Figure shows a collector in which the intersection problem discovered. We also realised that not having self-collision between sand particles may bias the separation procedure as the particles do not collide each other, they were expected to do.